Related Clues:

• Dirt, say, swirling round edge
• Dirty mark
• Spot — shame
• Scandal fodder
• Lurid gossip
• Word before poor or cheap
• Vacuum's contents
• Golf crime drops Charlie in dirt
• Trouble spot
• Carpet cleaner's target
• Icky coating
• Mop target
• Type of tax that comes out in the wash
• Woodworker's choice
• Ground material